gravy vs perk

gravy

noun
  • Extra benefit. 

  • Unearned gain. 

  • Sauce used for pasta. 

  • A dark savoury sauce prepared from stock and usually meat juices; brown gravy. 

  • Curry sauce. 

  • A pale sauce prepared from a roux with meat fat; a type of béchamel sauce. 

verb
  • To make gravy. 

perk

noun
  • Perquisite. 

  • A percolator, particularly of coffee. 

  • A bonus ability that a player character can acquire; a permanent power-up. 

verb
  • To make trim or smart; to straighten up; to erect; to make a jaunty or saucy display of. 

  • Of coffee: to be produced by heated water seeping (“percolating”) through coffee grounds. 

  • To appear from below or behind something, emerge, pop up, poke out. 

  • To make (coffee) in a percolator or a drip coffeemaker. 

How often have the words gravy and perk occurred in a corpus of books? (source: Google Ngram Viewer )